| |
| Web URL(s): | http://a-c-s.confex.com/crops/2009am/webprogram/Paper55344.html
Last checked: 01/12/2010 |
|---|
| Publication Type:
| Report |
|---|
| Content Type: | Abstract or Summary only |
|---|
| Author(s): | Ketterings, Quirine;
Yuan, Cansheng;
Gami, Sanjay;
Woods, Micah;
Rao, Renuka |
|---|
| Author Affiliation: | Ketterings: Cornell Univ., Ithaca, NY; Yuan: Nanjing Station of Soil and Fertilization, Nanjing, China; Gami: Animal Science, Cornell Univ., Ithaca, NY; Woods: Asian Turfgrass Center, Bangsai, Ayuddhaya, Thailand; Rao: Cornell Nutrient Analysis Laboratory, Cornell Univ., Ithaca, NY |
|---|
| Title: | A simple method for estimating cation exchange capacity accross [across] a wide range of soils |
|---|
| Section: | Soil testing methods, correlation, and calibration: II
Other records with the "Soil testing methods, correlation, and calibration: II" Section
|
|---|
| Meeting Info.: | Pittsburgh, PA: November 1-5, 2009 |
|---|
| Source: | 2009 International Annual Meetings: [Abstracts][ASA-CSSA-SSSA]. 2009, p. 55344. |
|---|
| Publishing Information: | [Madison, WI]: American Society of Agronomy, Crop Science Society of America, Soil Science Society of America |
|---|
| # of Pages: | 1 |
|---|
| Keywords: | TIC Keywords: Calcium carbonate; Cation exchange capacity; Chemical soil analysis; Nutrient absorption; Soil pH; Soil testing; Soil water relations
|
|---|
| Abstract/Contents: | "Cation exchange capacity (CEC) is an important soil characteristic. The BaCl2-compulsive exchange method is the recommended method for measuring the effective CEC (ECEC) of a soil at its native pH and solution ionic strength. However, this method is also a very time-consuming and expensive, and generates a hazardous waste (BaCl2.2H2O). As a result, soil testing laboratories do not usually measure the effective CEC, but rather estimate it from standard agronomic soil test results (summation method). The latter method is known to result in inaccurate estimates for calcareous soils. The objective of the present study was to evaluate single and double consecutive extractions with 0.01 M SrCl2 (1:10 ratio and 5 min shaking time) for their ability to estimate ECEC. Fifty New York agricultural soils were analyzed using the BaCl2-compulsive exchange method, and results were compared to those obtained with agronomic soil test summation methods (both Morgan and Mehlich-3) and the single and double extractions with 0.01 M SrCl2. The soils ranged in pH from 5.1-8.4, with an organic matter level from 11-98 g kg-1. Texture varied from sand to clay. The CECsum estimates based on Mehlich 3 or Morgan greatly overestimated the ECEC, mostly (but not exclusively) due to dissolution of calcium carbonate. The single extraction with 0.01 M SrCl2 correlated well with the compulsive exchange method across all soils (slope=1.04, r2 = 0.85, n=50). This method resulted in more accurate estimates of cation saturation ratios as well. A double extraction did not add to the accuracy of the prediction. We conclude a single 0.01 M SrCl2 extraction is a simple and inexpensive method of estimating ECEC and nutrient saturation levels." |
|---|
| Language: | English |
|---|
| References: | 0 |
|---|
| Note: | This item is an abstract only |
|---|
| ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete):
Ketterings, Q., C. Yuan, S. Gami, M. Woods, and R. Rao. 2009. A simple method for estimating cation exchange capacity accross [across] a wide range of soils. Int. Ann. Meet. p. 55344. |
| Fastlink to access this record outside TGIF: https://tic.lib.msu.edu/tgif/flink?recno=159006 |
| If there are problems with this record, send us feedback about record 159006. |
| Choices for finding the above item: |
|---|
| Web URL(s):
http://a-c-s.confex.com/crops/2009am/webprogram/Paper55344.html
Last checked: 01/12/2010 |
| Find from within TIC:
Digitally in TIC by record number. |
| Request through your local library's inter-library loan service (bring or send a copy of this TGIF record) |
